underground utility tunnel perfluorohexanone fire extinguishing

perfluorohexanone heat absorption cooling fire extinguishing — Wanlin, 12-year Chinese perfluorohexanone (FK-5-1-12) fire extinguishing manufacturer, WL-PF800 (Electrical Cabinet & Room Perfluorohexanone Fire Extinguishing Device) NFPA 2001/ISO 14520/EN 15004 certified. Compact Cabinet Protection + FK-5-1-12 Agent + Thermal Activation + Direct In-Cabinet Di···